We've had this conversation before, and I suggested the ericcson phone camera (the upgraded one for the T300, the MCA-25). USB cameras were dismised because of their power requirements, and the fact thay need a USB interface, which would entail a host controller being developed for the GP32, which is NOT an easy thing to do. The idea eventually was abandoned because the EXT port is just not fast enugh for image transfer, and the USB connector cannot be used for anything else.